Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.According to thedefinition of LCA on Wikipedia: “The lowest ...
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其他好文 时间:
2015-07-13 07:49:28
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148
题目235 Lowest Common Ancestor of a Binary Tree因为是binary search tree,因此利用没个节点的值进行二分查找即可复杂度O(h)class Solution: # @param {TreeNode} root # @param {T...
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其他好文 时间:
2015-07-13 07:48:45
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105
Lowest Common Ancestor of a Binary Search TreeGiven a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.Ac...
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编程语言 时间:
2015-07-12 20:09:59
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137
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
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其他好文 时间:
2015-07-12 17:13:07
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101
/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x...
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其他好文 时间:
2015-07-12 17:09:37
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95
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
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其他好文 时间:
2015-07-12 15:36:05
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99
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
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其他好文 时间:
2015-07-12 11:07:12
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170
题目很好理解,即求一棵二叉树中两个节点的公共祖先。
我的解题思路是使用DFS,求出从根节点到两个待查节点各自的路径,然后从头开始比较两个路径,最后一个相等的节点即为公共祖先节点。完整代码如下。
class Solution {
public:
//DFS代码
void findNode(TreeNode* root, TreeNode* toFind, vector &curPath...
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其他好文 时间:
2015-07-12 09:39:01
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122
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
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其他好文 时间:
2015-07-12 06:58:48
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88
1.jQuery基本选择器:#id:根据id匹配一个元素.class:根据给定的class匹配元素element:根据标签匹配元素*:匹配所有元素selector1,selector2:将每一个选择器匹配到的元素一起返回2.层次选择器$("ancestor descendant"):选择ancest...
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Web程序 时间:
2015-07-12 00:09:16
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217